diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 1ed7c1a4548051204eaf25fca23264af5d25ffbd..c52232d2abb8e22b520262265b3cb327be75c82f 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -2018,7 +2018,7 @@ static u64 numa_get_avg_runtime(struct task_struct *p, u64 *period)
 		*period = now - p->last_task_numa_placement;
 
 		/* Avoid backward, and prevent potential divide error */
-		if (*period < 0)
+		if ((s64)*period < 0)
 			*period = 0;
 	} else {
 		delta = p->se.avg.load_sum;